In short
- The exchange trades Monday to Friday, roughly 9:00 to 15:00 East Africa Time, and is closed on Kenyan public holidays.
- The session opens with a pre-open period in which orders are collected but nothing trades.
- A price exists only where a buyer and a seller agreed. On a quiet counter, the “last price” may be days old.
- An order placed after the close queues for the next session.
Knowing the hours sounds like trivia until the first time you place an order at nine in the evening and nothing happens, or you sell into a market that has already closed and spend a day wondering.
The trading day
The Nairobi Securities Exchange runs on weekdays, in East Africa Time (UTC+3 — Kenya does not change its clocks). In broad terms:
| Period | Roughly | What happens |
|---|---|---|
| Pre-open | From 9:00 | Orders are entered and can be changed. Nothing is matched yet. |
| Opening | About 9:30 | Collected orders are matched to establish the opening price. |
| Continuous trading | Until 15:00 | Orders match whenever a buyer’s and seller’s prices meet. |
| Close | 15:00 | Trading stops; closing prices are published shortly after. |
The exchange is closed at weekends and on Kenyan public holidays, which move from year to year. Where a holiday falls mid-week it also pushes out settlement, because T+3 counts business days rather than calendar days.
Times are occasionally changed by the exchange — after a system problem, or by notice — so if something hinges on the exact minute, check the NSE’s own announcements.
What the pre-open is for
Between the moment the system opens and the moment trading starts, brokers enter the orders they have collected overnight. Nothing is executed. At the end of that period the orders are matched against each other in one go to produce an opening price.
The point is fairness. Without it, whoever’s order arrived a millisecond after the bell would set the price for everyone. Collecting orders first and matching them together means the open reflects demand that built up overnight rather than who had the fastest finger.
How a share price is actually made
A share price is not set by the company, the exchange or your broker. It is the price at which the most recent buyer and seller agreed, and nothing more.
Three consequences for a Kenyan investor:
- A last price can be stale. If a counter did not trade today, yesterday’s close is still displayed. It is a record of history, not a quote.
- The spread matters more than the price. Between the best bid and the best offer there can be a wide gap on a thin counter. You buy at the offer and sell at the bid, and the difference is a real cost.
- Size moves price. A large order on a counter that trades a few thousand shillings a day will walk the price against you. This is why liquidity — how much a company actually trades — deserves as much attention as its results.
The closing price
The closing price is what gets published, quoted in the news and used to value your portfolio. It is also the price your valuation moves on, even if you could not have sold at it. On a counter that traded ten shares at the bell, the closing price is technically correct and practically meaningless.
Ipahco’s markets page shows the day’s prices with the volume behind them, which is the context that tells you whether a move is real.
See this on the NSE, not in theory
Ipahco screens every company listed on the Nairobi Securities Exchange, tracks dividends and shows you which licensed brokers will open an account for you.
Orders outside market hours
You can place an order with your broker at any time — most brokers’ apps accept them round the clock. What you cannot do is have it executed outside the session. Orders placed in the evening or at the weekend are entered when the market next opens, and they take their place in the queue then.
Two habits follow from that:
- Use a limit price on an overnight order. You do not know what the market will open at, and a market order placed at midnight accepts whatever the morning brings.
- Expect a gap. Prices can open away from the previous close if news broke overnight. The close is not a promise.
How this fits with settlement
Trading hours decide when a trade happens. Settlement decides when the money and the shares actually change hands: three business days later, on the T+3 cycle. How to sell shares on the NSE follows the money from the order to your bank account, and NSE trading costs covers what comes off along the way.
Frequently asked questions
What time does the NSE open and close?
The Nairobi Securities Exchange trades Monday to Friday, with a pre-open from around 9:00 and continuous trading until the 15:00 close, in East Africa Time. The exchange publishes any change to these times.
Is the NSE open on public holidays?
No. The exchange is closed at weekends and on Kenyan public holidays, and settlement timelines shift accordingly.
Can I buy shares after the market closes?
You can place the order, but it will not execute until the market next opens. Use a limit price so an overnight order does not accept whatever price the open brings.
Why has the price of my share not changed for days?
Because nobody traded it. The displayed price is the last price at which a trade happened, so on a thinly traded counter it can be several days old.
Does the NSE have a lunch break?
No. Once continuous trading begins it runs through to the close without a scheduled break.
Education, not investment advice. Session times are the exchange’s to set and have changed before — confirm against the NSE’s own notices if a minute matters to you.